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Pentagonal Rotunda

\begin{figure}\BoxedEPSF{J06_net.epsf scaled 700}\end{figure}

Half of an Icosidodecahedron, denoted $R_5$. It has 10 triangular and five pentagonal faces separating a Pentagonal ceiling and a Dodecahedral floor. It is Johnson Solid $J_{6}$, and the only true Rotunda.

See also Icosidodecahedron, Johnson Solid, Rotunda

© 1996-9 Eric W. Weisstein